Android 无法在表格布局中显示图标
我试图在选项卡中显示图标,我正在使用tablayout和viewpager,但当我调用tablayout.setupWithViewPager(viewpager)时,我的图标正在消失 Min是16岁 目标是24 支持库24.2.1 以下是我设置选项卡的方式:-Android 无法在表格布局中显示图标,android,android-layout,android-viewpager,material-design,android-tablayout,Android,Android Layout,Android Viewpager,Material Design,Android Tablayout,我试图在选项卡中显示图标,我正在使用tablayout和viewpager,但当我调用tablayout.setupWithViewPager(viewpager)时,我的图标正在消失 Min是16岁 目标是24 支持库24.2.1 以下是我设置选项卡的方式:- private void setUpTabs(){ tabs.setupWithViewPager(viewpager); TabLayout.Tab discoverTab = tabs.new
private void setUpTabs(){
tabs.setupWithViewPager(viewpager);
TabLayout.Tab discoverTab = tabs.newTab();
TabLayout.Tab placesTab = tabs.newTab();
TabLayout.Tab rewardTab = tabs.newTab();
Drawable discover = ContextCompat.getDrawable(this, R.drawable.discover);
discover.setAlpha(255);
discover.setColorFilter(Color.WHITE, PorterDuff.Mode.SRC_ATOP);
Drawable places = ContextCompat.getDrawable(this, R.drawable.places);
places.setAlpha(55);
places.setColorFilter(Color.WHITE, PorterDuff.Mode.SRC_ATOP);
Drawable rewards = ContextCompat.getDrawable(this, R.drawable.rewards);
rewards.setAlpha(55);
rewards.setColorFilter(Color.WHITE, PorterDuff.Mode.SRC_ATOP);
discoverTab.setIcon(discover);
placesTab.setIcon(places);
rewardTab.setIcon(rewards);
tabs.addTab(discoverTab,0);
tabs.addTab(placesTab,1);
tabs.addTab(rewardTab,2);
}
浏览页面:-
private void setUpViewPager(){
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFrag(DiscoverFragment.getFragment(null),"Discover");
adapter.addFrag(PlacesFragment.getFragment(null),"Places");
adapter.addFrag(RewardsFragment.getFragment(null),"Rewards");
viewpager.setAdapter(adapter);
}
ViewPagerAdapter:-
public class ViewPagerAdapter extends FragmentStatePagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public ViewPagerAdapter(FragmentManager manager) {
super(manager);
}
@Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
@Override
public int getCount() {
return mFragmentList.size();
}
public void addFrag(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
@Override
public CharSequence getPageTitle(int position) {
// return null to display only the icon
return null;
}
}
公共类ViewPagerAdapter扩展了FragmentStatePagerAdapter{
私有最终列表MFFragmentList=new ArrayList();
私有最终列表MFFragmentTitleList=new ArrayList();
公共视图页面编辑器(碎片管理器){
高级经理;
}
@凌驾
公共片段getItem(int位置){
返回MFFragmentList.get(位置);
}
@凌驾
public int getCount(){
返回MFFragmentList.size();
}
public void addFrag(片段、字符串标题){
添加(片段);
MFFragmentTitleList.add(标题);
}
@凌驾
公共字符序列getPageTitle(int位置){
//返回null以仅显示图标
返回null;
}
}
我的XML布局:-
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:id="@+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.v7.widget.Toolbar
android:id="@+id/action_bar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />
<android.support.design.widget.TabLayout
android:id="@+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/colorPrimary"
app:tabGravity="fill"
app:tabIndicatorColor="@android:color/white"
app:tabMode="fixed"
app:tabSelectedTextColor="?attr/colorAccent"
app:tabTextColor="@android:color/black" />
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="@+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>
试试这个方法,它会对你有用的
import android.os.Bundle;
import android.support.design.widget.TabLayout;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
private Toolbar toolbar;
private TabLayout tabLayout;
private ViewPager viewPager;
private int[] tabIcons = {
R.drawable.ic_tab_favourite,
R.drawable.ic_tab_call,
R.drawable.ic_tab_contacts
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
viewPager = (ViewPager) findViewById(R.id.viewpager);
setupViewPager(viewPager);
tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
setupTabIcons();
}
private void setupTabIcons() {
tabLayout.getTabAt(0).setIcon(tabIcons[0]);
tabLayout.getTabAt(1).setIcon(tabIcons[1]);
tabLayout.getTabAt(2).setIcon(tabIcons[2]);
}
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFrag(new OneFragment(), "ONE");
adapter.addFrag(new TwoFragment(), "TWO");
adapter.addFrag(new ThreeFragment(), "THREE");
viewPager.setAdapter(adapter);
}
class ViewPagerAdapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public ViewPagerAdapter(FragmentManager manager) {
super(manager);
}
@Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
@Override
public int getCount() {
return mFragmentList.size();
}
public void addFrag(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
@Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
}
导入android.os.Bundle;
导入android.support.design.widget.TabLayout;
导入android.support.v4.app.Fragment;
导入android.support.v4.app.FragmentManager;
导入android.support.v4.app.FragmentPagerAdapter;
导入android.support.v4.view.ViewPager;
导入android.support.v7.app.AppActivity;
导入android.support.v7.widget.Toolbar;
导入java.util.ArrayList;
导入java.util.List;
公共类MainActivity扩展了AppCompatActivity{
专用工具栏;
私人摊位摊位;
私人视页机视页机;
私有int[]选项卡图标={
R.drawable.ic\u tab\u最爱,
R.drawable.ic\u tab\u呼叫,
R.drawable.ic\U tab\U触点
};
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
toolbar=(toolbar)findviewbyd(R.id.toolbar);
设置支持操作栏(工具栏);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
viewPager=(viewPager)findViewById(R.id.viewPager);
设置viewPager(viewPager);
tabLayout=(tabLayout)findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
setupTabIcons();
}
私有void setupTabIcons(){
tabLayout.getTabAt(0).setIcon(tabIcons[0]);
tabLayout.getTabAt(1).setIcon(tabIcons[1]);
tabLayout.getTabAt(2).setIcon(tabIcons[2]);
}
专用无效设置ViewPager(ViewPager ViewPager){
ViewPagerAdapter适配器=新的ViewPagerAdapter(getSupportFragmentManager());
addFrag(新的OneFragment(),“一”);
addFrag(新的TwoFragment(),“TWO”);
addFrag(新的ThreeFragment(),“THREE”);
viewPager.setAdapter(适配器);
}
类ViewPagerAdapter扩展了FragmentPagerAdapter{
私有最终列表MFFragmentList=new ArrayList();
私有最终列表MFFragmentTitleList=new ArrayList();
公共视图页面编辑器(碎片管理器){
高级经理;
}
@凌驾
公共片段getItem(int位置){
返回MFFragmentList.get(位置);
}
@凌驾
public int getCount(){
返回MFFragmentList.size();
}
public void addFrag(片段、字符串标题){
添加(片段);
MFFragmentTitleList.add(标题);
}
@凌驾
公共字符序列getPageTitle(int位置){
返回MFFragmentTitleList.get(位置);
}
}
}
要了解更多信息,请尝试这种方法,它会对您有效
import android.os.Bundle;
import android.support.design.widget.TabLayout;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
private Toolbar toolbar;
private TabLayout tabLayout;
private ViewPager viewPager;
private int[] tabIcons = {
R.drawable.ic_tab_favourite,
R.drawable.ic_tab_call,
R.drawable.ic_tab_contacts
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
viewPager = (ViewPager) findViewById(R.id.viewpager);
setupViewPager(viewPager);
tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
setupTabIcons();
}
private void setupTabIcons() {
tabLayout.getTabAt(0).setIcon(tabIcons[0]);
tabLayout.getTabAt(1).setIcon(tabIcons[1]);
tabLayout.getTabAt(2).setIcon(tabIcons[2]);
}
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFrag(new OneFragment(), "ONE");
adapter.addFrag(new TwoFragment(), "TWO");
adapter.addFrag(new ThreeFragment(), "THREE");
viewPager.setAdapter(adapter);
}
class ViewPagerAdapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public ViewPagerAdapter(FragmentManager manager) {
super(manager);
}
@Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
@Override
public int getCount() {
return mFragmentList.size();
}
public void addFrag(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
@Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
}
导入android.os.Bundle;
导入android.support.design.widget.TabLayout;
导入android.support.v4.app.Fragment;
导入android.support.v4.app.FragmentManager;
导入android.support.v4.app.FragmentPagerAdapter;
导入android.support.v4.view.ViewPager;
导入android.support.v7.app.AppActivity;
导入android.support.v7.widget.Toolbar;
导入java.util.ArrayList;
导入java.util.List;
公共类MainActivity扩展了AppCompatActivity{
专用工具栏;
私人摊位摊位;
私人视页机视页机;
私有int[]选项卡图标={
R.drawable.ic\u tab\u最爱,
R.drawable.ic\u tab\u呼叫,
R.drawable.ic\U tab\U触点
};
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
toolbar=(toolbar)findviewbyd(R.id.toolbar);
设置支持操作栏(工具栏);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
viewPager=(viewPager)findViewById(R.id.viewPager);
设置viewPager(viewPager);
tabLayout=(tabLayout)findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
setupTabIcons();
}
私有void setupTabIcons(){
tabLayout.getTabAt(0).setIcon(tabIcons[0]);
tabLayout.getTabAt(1).setIcon(tabIcons[1]);
tabLayout.getTabAt(2).setIcon(tabIcons[2]);
}
专用无效设置ViewPager(ViewPager ViewPager){
ViewPagerAdapter适配器=新的ViewPagerAdapter(getSupportFragmentManager());
addFrag(新的OneFragment(),“一”);
addFrag(新的TwoFragment(),“TWO”);
addFrag(新的ThreeFragment(),“THREE”);
viewPager.setAdapter(适配器);
}
类ViewPagerAdapter扩展了FragmentPagerAdapter{
私有最终列表MFFragmentList=new ArrayList();
私有最终列表MFFragmentTitleList=new ArrayList();
公共视图页面编辑器(碎片管理器){
高级经理;
}
@爱